int sum = 4 * data.length; for (int i = 0; i < data.length; i++) { sum += data[i].getLocalFileDataLength().getValue(); } byte[] result = new byte[sum]; int start = 0; for (int i = 0; i < data.length; i++) { System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2); System.arraycopy(data[i].getLocalFileDataLength().getBytes(), 0, result, start + 2, 2); byte[] local = data[i].getLocalFileDataData(); System.arraycopy(local, 0, result, start + 4, local.length); start += (local.length + 4); } return result;
int sum = 4 * data.length; for (int i = 0; i < data.length; i++) { sum += data[i].getCentralDirectoryLength().getValue(); } byte[] result = new byte[sum]; int start = 0; for (int i = 0; i < data.length; i++) { System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2); System.arraycopy(data[i].getCentralDirectoryLength().getBytes(), 0, result, start + 2, 2); byte[] local = data[i].getCentralDirectoryData(); System.arraycopy(local, 0, result, start + 4, local.length); start += (local.length + 4); } return result;
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/zip/ExtraFieldUtils.java File path: /apache-ant-1.7.0/src/org/apache/tools/zip/ExtraFieldUtils.java
Method name: byte[] mergeLocalFileDataData(ZipExtraField[]) Method name: byte[] mergeCentralDirectoryData(ZipExtraField[])
Number of AST nodes: 12 Number of AST nodes: 12
1
int sum = 4 * data.length;
1
int sum = 4 * data.length;
2
        for (int i = 0; i < data.length; i++) {
2
        for (int i = 0; i < data.length; i++) {
3
            sum += data[i].getLocalFileDataLength().getValue();
3
            sum += data[i].getCentralDirectoryLength().getValue();
4
        }
4
        }
5
        byte[] result = new byte[sum];
5
        byte[] result = new byte[sum];
6
        int start = 0;
6
        int start = 0;
7
        for (int i = 0; i < data.length; i++) {
7
        for (int i = 0; i < data.length; i++) {
8
            System.arraycopy(data[i].getHeaderId().getBytes(),
8
            System.arraycopy(data[i].getHeaderId().getBytes(),
9
                             0, result, start, 2);
9
                             0, result, start, 2);
10
            System.arraycopy(data[i].getLocalFileDataLength().getBytes(),
10
            System.arraycopy(data[i].getCentralDirectoryLength().getBytes(),
11
                             0, result, start + 2, 2);
11
                             0, result, start + 2, 2);
12
            byte[] local = data[i].getLocalFileDataData();
12
            byte[] local = data[i].getCentralDirectoryData();
13
            System.arraycopy(local, 0, result, start + 4, local.length);
13
            System.arraycopy(local, 0, result, start + 4, local.length);
14
            start += (local.length + 4);
14
            start += (local.length + 4);
15
        }
15
        }
16
        return result;
16
        return result;
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)0.4
Clones locationClones are declared in the same class
Number of node comparisons45
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements8
    Number of unmapped statements in the first code fragment4
    Number of unmapped statements in the second code fragment4
    Time elapsed for statement mapping (ms)4.4
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    int sum = 4 * data.length;
    1
    int sum = 4 * data.length;
    2
    for (int i = 0; i < data.length; i++)
    6
    for (int i = 0; i < data.length; i++)
                                                                                                                                                  
    7
    System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2);
    Preondition Violations
    Unmatched statement System.arraycopy(data[i].getHeaderId().getBytes(),0,result,start,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    7
    System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2);
                                                                                                                                                                                      
    8
    System.arraycopy(data[i].getCentralDirectoryLength().getBytes(), 0, result, start + 2, 2);
    Preondition Violations
    Unmatched statement System.arraycopy(data[i].getCentralDirectoryLength().getBytes(),0,result,start + 2,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    8
    System.arraycopy(data[i].getCentralDirectoryLength().getBytes(), 0, result, start + 2, 2);
                                                                                                        
    9
    byte[] local = data[i].getCentralDirectoryData();
    Preondition Violations
    Unmatched statement byte[] local=data[i].getCentralDirectoryData(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    9
    byte[] local = data[i].getCentralDirectoryData();
                                                                                                                            
    10
    System.arraycopy(local, 0, result, start + 4, local.length);
    Preondition Violations
    Unmatched statement System.arraycopy(local,0,result,start + 4,local.length); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    10
    System.arraycopy(local, 0, result, start + 4, local.length);
    3
    sum += data[i].getLocalFileDataLength().getValue();
    3
    sum += data[i].getLocalFileDataLength().getValue();
    11
    start += (local.length + 4);
    Differences
    Expression1Expression2Difference
    sumstartVARIABLE_NAME_MISMATCH
    data[i].getLocalFileDataLength().getValue()(local.length + 4)TYPE_COMPATIBLE_REPLACEMENT
    Preondition Violations
    Expression sum cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression start cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression data[i].getLocalFileDataLength().getValue() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression (local.length + 4) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    11
    start += (local.length + 4);
    4
    byte[] result = new byte[sum];
    4
    byte[] result = new byte[sum];
    5
    int start = 0;
    5
    int start = 0;
    6
    for (int i = 0; i < data.length; i++)
    2
    for (int i = 0; i < data.length; i++)
    7
    System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2);
    7
    System.arraycopy(data[i].getHeaderId().getBytes(), 0, result, start, 2);
    Preondition Violations
    Unmatched statement System.arraycopy(data[i].getHeaderId().getBytes(),0,result,start,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                                                                  
    8
    System.arraycopy(data[i].getLocalFileDataLength().getBytes(), 0, result, start + 2, 2);
    8
    System.arraycopy(data[i].getLocalFileDataLength().getBytes(), 0, result, start + 2, 2);
    Preondition Violations
    Unmatched statement System.arraycopy(data[i].getLocalFileDataLength().getBytes(),0,result,start + 2,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                                                                                                
    9
    byte[] local = data[i].getLocalFileDataData();
    9
    byte[] local = data[i].getLocalFileDataData();
    Preondition Violations
    Unmatched statement byte[] local=data[i].getLocalFileDataData(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                  
    10
    System.arraycopy(local, 0, result, start + 4, local.length);
    10
    System.arraycopy(local, 0, result, start + 4, local.length);
    Preondition Violations
    Unmatched statement System.arraycopy(local,0,result,start + 4,local.length); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                                            
    11
    start += (local.length + 4);
    11
    start += (local.length + 4);
    3
    sum += data[i].getCentralDirectoryLength().getValue();
    Differences
    Expression1Expression2Difference
    startsumVARIABLE_NAME_MISMATCH
    (local.length + 4)data[i].getCentralDirectoryLength().getValue()TYPE_COMPATIBLE_REPLACEMENT
    Preondition Violations
    Expression start cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression sum cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression (local.length + 4) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression data[i].getCentralDirectoryLength().getValue() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3
    sum += data[i].getCentralDirectoryLength().getValue();
    12
    return result;
    12
    return result;
    Precondition Violations (17)
    Row Violation
    1Unmatched statement System.arraycopy(data[i].getHeaderId().getBytes(),0,result,start,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    2Unmatched statement System.arraycopy(data[i].getCentralDirectoryLength().getBytes(),0,result,start + 2,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    3Unmatched statement byte[] local=data[i].getCentralDirectoryData(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    4Unmatched statement System.arraycopy(local,0,result,start + 4,local.length); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    5Expression sum cannot be parameterized, because it has dependencies to/from statements that will be extracted
    6Expression start cannot be parameterized, because it has dependencies to/from statements that will be extracted
    7Expression data[i].getLocalFileDataLength().getValue() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    8Expression (local.length + 4) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    9Unmatched statement System.arraycopy(data[i].getHeaderId().getBytes(),0,result,start,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    10Unmatched statement System.arraycopy(data[i].getLocalFileDataLength().getBytes(),0,result,start + 2,2); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    11Unmatched statement byte[] local=data[i].getLocalFileDataData(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    12Unmatched statement System.arraycopy(local,0,result,start + 4,local.length); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    13Expression start cannot be parameterized, because it has dependencies to/from statements that will be extracted
    14Expression sum cannot be parameterized, because it has dependencies to/from statements that will be extracted
    15Expression (local.length + 4) cannot be parameterized, because it has dependencies to/from statements that will be extracted
    16Expression data[i].getCentralDirectoryLength().getValue() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    17Clone fragment #1 returns variables result, start, i , while Clone fragment #2 returns variables result, start, i